Wash the cranberries and the limes. Slice the limes into thin slices. Set aside.
Thread the needle with the floss.
Secure the first cranberry on the floss by putting the needle through the cranberry twice, then making a knot in the floss. Continue threading the cranberries and limes until desired length is achieved.
Tie a knot at the end, leaving at least 12 inches of floss for tying to the tree.
Note: Cranberries and limes will stay fresh looking for days and then will dry nicely on the tree for up to three weeks.